663122240 has 224 divisors, whose sum is σ = 1825873920. Its totient is φ = 227174400.

The previous prime is 663122237. The next prime is 663122261. The reversal of 663122240 is 42221366.

It is a super-2 number, since 2×663122240² = 879462210365235200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6438029 + ... + 6438131.

Almost surely, 2^663122240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663122240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (912936960).

663122240 is an abundant number, since it is smaller than the sum of its proper divisors (1162751680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663122240 is a wasteful number, since it uses less digits than its factorization.

663122240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 663122240 is about 25751.1599738730. The cubic root of 663122240 is about 872.0295419669.

The spelling of 663122240 in words is "six hundred sixty-three million, one hundred twenty-two thousand, two hundred forty".